A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.
If the triangle ABC in the Question 7 is revolved about the side 5 cm, then find the volume of the solid so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8.
A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the volume of the solid so obtained.
The volume of a right circular cone is 9856 . If the diameter of the base is 28 cm, find
(i) height of the cone (ii) slant height of the cone (iii) curved surface area of the cone
A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?